Homer p



(No Model.)

H. P. NORTHROP.

STRIKING CLOCK.

Patented Mar 9, 1886i,

INVENTOR g? ATTORNEY WITNESSES: On, 59 49, 0.

UNITED STATES PATENT Orrrce.

HOMER F. NORTHROP, OF VATERBURY, CONNECTICUT, ASSIGNOR TO THE XVATEPUBURY CLOCK COMPANY, OF SAME PLACE.

STRIKING CLOCK.

FJPECIFICATIOZQ forming part of Letters Patent No. 337,784, dated March 9, 1886.

Application filed July 14. 1884. Serial No. 137,737. (No model.)

To aZZ whont it may concern/.- vided with a double liftcam, L, which en- Be it known that I, HOMER F. NoRTHRoP, gages with the lift A of the said part, with a residing at Vaterbury, in the county of New wheel, P, carrying a pin, 0, which engages Haven and State of Connecticut,haveinvented with the warn and stop of the part, and with certain new and useful Improvements in Strika wheel, K, carrying a count-wheel, J, which ing Mechanism for Clocks; and I do declare is engaged by the count-hook of the part. A the following to be a full, clear, and exact decoiled spring, I, encircling the arbor H and scription of the same, reference being had to having its ends respectively connected with the accompanying drawings, which form apart the rear plate of the movement and the lift T0 of this specification. of my improved part, holds the same in posi- 6o Heretoforethe lifts, warns, count-hooks, and tion for operation. stops of the striking parts of clocks have each By reason of its length and through its bevbeen made from separate pieces of wire or emeled finger the lift of my improved part is readbodied in several pieces of sheet metal. Such ily sprung aside for turning back the hands of I5 constructions are objectionable, in that the the clock, while by constructing and relatively pieces or parts are not positive and reliable arranging the warn and stop as shown the in action, in that they are liable to derangewarning and stopping of the striking part of ment, in that they are expensive to construct the clock is effected through a single pin carand organize, and in that they require adjustried by one of the wheels of the strikingtrain,

2o ing and fitting to each clock. which is thus simplified in construction and With the end in view of obviating the oboperation. jections above enumerated, my invention com- Having fully described one form which my prehends an improved part for the striking improved part may assume, I will now promechanism of clocks; and it consists in a sinceed to set forth the mode of its operation in 25 gle piece .of sheet metal having a lift, a warn, connection with the movement shown, which 7 a count-hook, and a stop. strikes the hours when the count-hook is de- My invention further consists in certain depressed between the teeth of the count-wheel, tails of construction, as will be hereinafter tie and the half-hours when it is engaged with their scribed, and pointed out in the claims. flat extended faces.

30 In the accompanying drawings, Figure 1 is Normally the pin 0 is engaged with the stop a view in elevation of one form which myim- D of the improved part, from which it is reproved part may assume, shown in a clockleased, a few minutes before striking, by the movement having its front plate partly broken lift-cam acting through thelift of the improved away; and Fig. 2 is a detached view, in perpart and raising the same, whereby the pin is 3 5 spective, of such part. released from the stop as aforesaid, and that 8 5 As herein shown, my improved part consists actuation of the train permitted which is reof a single piece of sheet metal embodying a quired for bringing the parts into position for lift, A, consisting of a long arm terminating immediate striking. This adjustment of parts in a beveled finger, Q, a main arm, N, an eX- having been effected, the train is arrested by 0 tension, M, offsetting from the lower face of the interception of the pin by the warn of the the same, a warn, B, and a stop, D, respectimproved part. \Vhen the time for striking ively, consisting of fingers extending inwardly arrives, the lift-cam passes the lift of the imat right angles from the said extension, and proved part, the same is depressed, the pin the former being located in the rear of and released from the warn, the train started, and

5 extending above the level of the latter, and a the hour, whatever it may be, is struck, after 5 count-hook, 0, located at the end of the said which the train is stopped through the countmain arm and at right angles therewith. The wheel, which elevates the said improved part said improved part is secured to a collet, G, into position for intercepting the pin by its mounted upon an arbor, H, located between stop. As to the striking ofthehalf-hours, when 50 the plates E and F of a clock-movement prothe lift-cam passes on the half-hour the lift IOO of my improved part, the same will be upheld in position forthe interception of the pin by the stop after the half-hour has been sounded by that tooth of the count-wheel upon which 5 the count-hook of my improved part was left ,1 after striking the preceding'hour.

' 1 By embodying the lift, warn, count-hook, and stop of the striking part of a-clock in a single piece of metal, positiveness and reliaro bility of action in such parts are obtained and their derangement avoided by reason of their integral re1ationship,and an obvious economy of time, labor, and outlay for tools in the construction of the striking parts of clocks is efr 5 fected. Moreover, my improved part, being made of sheetmetal and in one. piece, can be produced in perfect duplication andhandled Without distortion, and hence requires no adjusting orfitting in being assembled with the 20 other parts of a striking mechanism. Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is V 1. In the striking part of a clock, a single piece of sheet metalhavinga'lift, warn, count- 25 hook,'and stop, the warn and stop being bent at right angles to the body of the. piece, substantially asset forth. v

2. In the striking part of a clock, a single piece of sheet metal embodying a lift, warn, 3o count-hook, and stop, the warn and stop offsetting from that arm of the device carrying the count-hook thereof, substantially asset forth.

In testimony whereof I have signed this 35 specification in the presence of two subscribing witnesses.

GEo. E. TERRY, II. L. WADE. 

